I am trying to add map tiles as raster files in QGIS but when I add them they all appear on top of each other. I did this once before and everything was ok but I am now unable to find how to get the tiles showing as one map. I am using OS Streetview. Thanks in advance for your help. Martin
If you have just downloaded OS StreetView, note that files comes in two folders, 'georeferencing files' and 'SN' (or other index). This means that for whatever reasons OS decided to keep georeferencing information separate from maps.
Before loading maps in QGIS, you need to move TFW files from 'georeferencing' into 'sn' folder.
To check if QGIS recognized georeferencing information, use Raster\Miscellaneous\Information for the map you've added.
Raster without georeferencing info will show this: